Composition for making an insecticide.



UNITED STATES PATENT OFFICE.

JOHN BELL IRVING, OF BALM'ACNEIL, BALLINLUIG, SCOTLAND.

COMPOSITION FOR MAKING AN INSECTICIDE.

No Drawing.

To all whom it may concern: I

Be it known that I, JOHN BELL IRVING, a subject of the King of England,residing at Balmacneil, Ballinluig, Perthshire, Scotland, Great Britain,have invented new and useful Improvements in a Composition for Making anInsecticide, of which the following is a specifica'tiom' This inventionhas reference to the manufacture, application, and use of an insecticideor protective substance for washing hops and other plants, trees, and soforth; and the following is a description of the composition,

and the method of 1ts preparation and use, mvolvlng improvementshereunder.

As a base substance for the insecticide orv protective substance,quassia-wood, or equivalent woods giving bitter extracts, is employed,and there is combined with it a fatty acid, which soaks into, or isabsorbed by the wood. This compound when treated and used as hereafterdescribed, is such that the bitter principle of the wood is extractedfrom it, and the extract serves as the insecticide or protectivesubstance.

In some cases, prior to use-say at the place of use-the wood-containingthe fatty acid is mixed with an alkali in a dry state,

and the extract of the bitter principle is produced, and the substancebrought to the condition ready for use, by the admixture of the compoundwith heated water. In other cases, the wood containing the fatty acid ismixed and treated with a solution of an alkaline carbonate, and a soasolution is formed, and the bitter princip e of the wood is extracted;and this solution thus produced, is then used upon the plants in anyknown or desired way. 4

When stearic acid is used, of course it must be heated to bring it intoa liquid condition before mixing it with or applying it to the chips.

Accordlng to a modification, there is combined with the wood a suitableneutral fat, in which case, in the extraction of the bitter principlefrom it, caustic alkali must be used-i. e. at the time of preparation,before use of the solution-instead of the carbonate as above referredto.

This invention enables an insecticide or' Speeiflcation or LettersPatent. Patented Sept. 21, 1909- Application filed October 5, 1908.Serial No. 456,262.

'ferred to, to be produced at a relatively low against vegetable pestsof a full effective.

character.

As examples of proportions of in redients to be used in the preparationof t e insecticide or protective solution, 1n the'case of the fatingredient being a neutral fat, the following may be advantageouslyemployed Quass'ia chips 12 parts weight.

Olein Alkali (anhydrous carbonate of soda) 2' Quassia chips 10 01 111 564 64 Soda crystals .5 F

According to one manner of making up this compound, the olein issprinkled or and then the alkai is sprinkled over the mixture, and thewhole is then mixed thoroughly. It is then ready for market, andcanlgleiifilled into bags or packages, and

supplied in this form to the users.

It is to be noted that the proportion of may be varied largely, tosuitthe users requirements, or to meet different or varying purposes towhich it is to beapplied, ,or to meet difierent hardnesses of Water, andso on.

To prepare the solution, the ingredients are bolled in water forhalf-an-hour or more, and the solution so repared-which may be treatedas a stock so ution-may be diluted to any extent desired.

What is claimed is a 1. As a new composition, a base substance for usein making an insecticide, comprising quassia wood and a neutral fat.

poured over the chi s, and mixed with them,

chips, fatty acid (or neutral fat), and alkali, I

2. As a new composition for use in making an insecticide, comminutedquassia chips containing a neutral fat.

3. As a composition for use in making an insecticide, quassia woodcontaining a neutral fat, and an alkali.

4. A composition for use in making an insecticide comprising 10 to 13parts by weight of comminuted quassia chips, and 5 In testimony whereofI have signed my parts by weight of olein. name to this specification inthe presence of 5. As a composition for use in making an two subscribingwitnesses. I insecticide, 13 parts by weight of com- JOHN BELL IRVING. 5minuted quassia chips, 5 parts by weight of Witnesses:

olein, and 2 parts by weight of anhydrous 7 JOHN PINKERTON, carbonate ofsoda. ROB SMITH.

